80f0bb5971
Previously, jumps to labels in constructs from exterior statements would elicit only a warning. Upgrade these to errors unless the branch into the construct would enter into only DO, IF, and SELECT CASE constructs, whose interiors don't scope variables or have other set-up/tear-down semantics. Branches into these "safe" constructs are still errors if they're nested in an unsafe construct that doesn't also enclose the exterior branch statement. Differential Revision: https://reviews.llvm.org/D113310
62 lines
1.4 KiB
Fortran
62 lines
1.4 KiB
Fortran
! RUN: not %flang_fc1 -fdebug-unparse-with-symbols %s 2>&1 | FileCheck %s
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! CHECK: Label '50' was not found
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! CHECK-NOT: error: Label '55' is in a construct that prevents its use as a branch target here
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! CHECK: Label '55' is in a construct that prevents its use as a branch target here
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! CHECK: Label '70' is not a branch target
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! CHECK: Control flow use of '70'
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! CHECK: error: Label '80' is in a construct that prevents its use as a branch target here
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! CHECK: error: Label '90' is in a construct that prevents its use as a branch target here
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! CHECK: error: Label '91' is in a construct that prevents its use as a branch target here
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! CHECK: error: Label '92' is in a construct that prevents its use as a branch target here
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subroutine sub00(a,b,n,m)
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real a(n,m)
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real b(n,m)
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if (n .ne. m) then
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goto 50
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end if
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6 n = m
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end subroutine sub00
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subroutine sub01(a,b,n,m)
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real a(n,m)
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real b(n,m)
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if (n .ne. m) then
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goto 55
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else
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55 continue
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end if
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60 n = m
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end subroutine sub01
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subroutine sub02(a,b,n,m)
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real a(n,m)
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real b(n,m)
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if (n .ne. m) then
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goto 70
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else
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return
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end if
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70 FORMAT (1x,i6)
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end subroutine sub02
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subroutine sub03(a,n)
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real a(n)
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forall (j=1:n)
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80 a(n) = j
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end forall
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go to 80
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end subroutine sub03
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subroutine sub04(a,n)
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real a(n)
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where (a > 0)
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90 a = 1
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elsewhere (a < 0)
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91 a = 2
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elsewhere
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92 a = 3
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end where
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if (n - 3) 90, 91, 92
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end subroutine sub04
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